Disease is simply known as a particular abnormal condition that negatively affects the structure or function of all or part of an organism, and that is not due to any immediate external injury. Diseases are often known to be medical conditions that are associated with specific symptoms and signs.
A disease can be caused by external factors like pathogens or by internal dysfunctions. Under internal dysfunctions of the immune system, variety of different diseases can occur, such as various forms of, allergies and autoimmune, immunodeficiency, disorders, hypersensitivity, etc.
In humans, disease is often used more broadly to refer to any condition that causes pain, dysfunction, distress, social problems, or death to the person afflicted, or similar problems for those in contact with the person. In this case, it sometimes includes injuries, disabilities, disorders, syndromes, infections, isolated symptoms, deviant behaviors, and a typical variations of structure and function, while in other contexts and for other purposes these may be considered distinguishable categories. Diseases can affect people not only physically, but also mentally, as contracting and living with a disease can alter the affected person’s perspective on life.
However, death due to disease is called death by natural causes. There are four main types of disease: infectious diseases, deficiency diseases, hereditary diseases (including both genetic diseases and non-genetic hereditary diseases), and physiological diseases.
In addition, diseases can be classified in some ways, like communicable versus non-communicable diseases of which the deadliest diseases in humans are coronary artery disease (blood flow obstruction), then by cerebrovascular disease and lower respiratory infections. In developed countries, the diseases that cause the most sickness overall are neuropsychiatric conditions, such as depression and anxiety.
Ascariasis is transmitted with the aid of using unintentional ingestion of ascaris eggs via infected meals, water or soil. Once the eggs are swallowed, they’re surpassed into the gut in which they hatch into larvae. The larvae migrate via the frame and into the bloodstream in which they are able to reason extreme coughing and wheezing. The larvae are subsequently swallowed and go back to the small gut in which they mature and lay eggs from time to time as much as 240,000 in line with day. Ascaris eggs are surpassed into the feces and incubate withinside the soil for at the least weeks earlier than the cycle starts offevolved again.Read More
Pertussis, also known as whooping cough, is a highly contagious respiratory disease. It is caused by the bacterium Bordetella pertussis. Pertussis is known for uncontrollable, violent coughing which often makes it hard to breathe. After cough fits, someone with pertussis often needs to take deep breaths, which result in a “whooping” sound.Read More
Acute lymphocytic leukemia (ALL) is a type of cancer of the blood and bone marrow — the spongy tissue inside bones where blood cells are made.The word “acute” in acute lymphocytic leukemia comes from the fact that the disease progresses rapidly and creates immature blood cells, rather than mature ones. The word “lymphocytic” in acute lymphocytic leukemia refers to the white blood cells called lymphocytes, which ALL affects. Acute lymphocytic leukemia is also known as acute lymphoblastic leukemia.Read More